Plow attachment.



9W. cm.

L. H. MoGALL.

PLOW ATTACHMENT;

APPLICATION FILED JUNE 25, 1909.

witnesses Patented Feb. 8, 1910.

Lgmml H.McGa1L LEMUEL H. MGCATJL, OF GALLAWAY, NEBRASKA.

NT @FFTQE.

PLOW ATTACHMENT.

'T 0 all whom it may concern:

Be it known that I, LEMUEL H. MoCALL, a citizen of the United States,residing at Callaway, in the county of Custer, State of Nebraska, haveinvented certain new and useful Improvements in Plow Attachments; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

The present invention has reference to plow attachments, and it residesprimarily, in the production of an extremely simple, inexpensive, andeffective pulverizing device which may be readily attached to andsubsequently removed from any ordinary type of plow now in use, thedevice being located directly in the rear of the plow share, so as tooperate upon the soil turned up by the latter.

To this end, the pulverizer comprises a series of spring-metal kniveswhose upper ends are formed with eyes through which the supporting andattaching bar extends, and whose thickened lower portions are curvedrearwardly, and are sharpened so as to provide cutting edges. Theseknives are further supported by means of a brace rod to which they areconnected, said rod being arranged in spaced parallel relation to theattaching bar above-mentioned, the knives being formed with rearwardlyprojecting coils which are located intermediate said rod and bar.

The preferred embodiment of the inven tion is illustrated in theaccompanying drawings, in which corresponding parts are designated bythe same reference numerals throughout the several views, whereof:

Figure 1 is a fragmental perspective view illustrating the applicationof the invention. Fig. 2 is a section on line 22 of Fig. 1.

Referring more particularly to the drawings, 5 designates in a generalmanner the beam of a wheeled plow, 6 the plow share, and 7 the rearstandard which is connected with the beam by the bracket 8. These partsmay be of any preferred construction, and hence they appear in dottedlines in the drawings and are not described in detail.

The pulverizing attachment in which this invention resides comprises,essentially, a horizontal supporting bar 9 and a series of spring-metalnives 10 suspended therefrom Specification of Letters Patent.

Application filed June 25, 1909.

Patented Feb. 8, 1910.

Serial No. 504,342.

and arranged in spaced parallel relation. The bar 9 projects across theupper face of the bracket 8 and is adjustably clamped thereto by aU-shaped clip 11, which straddles said bracket from one side and has thefree threaded ends of its legs extending through openings in a metalstrap 12 held against the opposite side face of the bracket by means ofnuts 13 threaded upon said legs. This arrangement as is evident, permits the series of knives to be shifted as an entirety, toward and fromthe bracket. The stems of these knives terminate at their up per ends ineyes 14 through which bar 9 extends, and adjacent said eyes the stemsare formed with rearwardly projecting coils 15. Below the coils, theknives are fastened by spring clips 16 to a brace rod 17 disposedparallel with said bar.

The lower or body portion 18 of each knife is gradually widened andthickened as shown, and said portion is curved rearwardly. The sidefaces of such portions are oppositely beveled or sharpened, so as toprovide cutting edges 19 which are forced yieldingly toward the groundby the tension of the respective spring coils 15. The rear ends of theseportions have a gradually decreasing width and terminate in points 20.During the movement of the plow, the widened and thickened portions ofthe knives, owing to their disposition rearwardly of the share, will bedrawn under tension directly across the soil turned up by the latter,and the sharpened edges thereof will pulverize the same, as will beunderstood. The position of the series of knives as an entirety may, asabove stated, be adjusted by loosening the nuts 13 and subsequentlymoving the supporting bar 9 in the proper direction.

While the invention has been shown and applied to a plow having a singleshare, it will be obvious that where the plow is provided with two ormore shares, a corresponding number of attachments may be employed, eachstandard having fastened thereto, in such instance, arearwardly-extending bracket to which one of the attachments may besecured.

What is claimed, is

1. The combination in a pulverizer, of a supporting bar adapted forattachment to a plow; and a series of spring-metal knives suspended fromsaid bar and arranged in spaced parallel relation, each knife having itsupper end formed with an eye through which the bar passes, and its lowerportion thickened and curved rearwardly and provided with a sharpenedlower edge.

2. The combination in a pulverizer, of a horizontal supporting baradapted for attachment to a plow; a series of spring-metal knivessuspended at their upper ends from said bar; a brace rod disposed belowand parallel with said bar; and fastening devices for connecting saidknives to said rod, each knife being formed with a rearwardly projectingcoil located between said bar and rod.

3. The combination in a pulverizer, of a horizontal supporting baradapted for attachment to a plow; a series of spring-metal knivessuspended at their upper ends from said bar and having their lowerportions thickened and curved rearwardly and provlded with sharpenedlower edges; a brace 1 rod disposed below and parallel with said bar;and fastening devices for connecting said knives to said rod.

4-. The combination in a pulverizer, of a horizontal supporting baradapted for attachment to a plow; a series of spring-metal knivessuspended at their upper ends from said bar and having their lowerportions thickened and curved rearwardly and provided with sharpenedlower edges, a brace rod disposed below and parallel with said bar; andfastening devices for connecting said knives to said rod, each knifebeing formed with a rearwardly projecting coil located between said barand rod.

In testimony whereof, I affix my signature, in presence of twowitnesses.

LEMUEL H. MoCALL. lVitnesses:

G. H. LUTTER, STEPHEN lVILooX.

